The Avengers #103

In "The Sentinels Are Alive and Well!", the Avengers race to uncover who’s behind a wave of attacks targeting their mutant allies—especially after the sudden disappearance of Quicksilver and the kidnapping of the Scarlet Witch. With tensions rising and the shadow of the Sentinel Program growing darker, the team must confront the unsettling possibility that the machines designed to hunt mutants might not be as dormant as they seem. Written by Roy Thomas and brought to life by Rich Buckler’s dynamic art, with inks by Joe Sinnott and letters by Sam Rosen, this 1972 issue features a cover by Rich Buckler and Frank Giacoia.